Scaffold bracket



Nov. 13, 1934. L. c. EBERLE 1,980,854

SCAFFOLD BRACKET Filed Sept: 26, l933 2 Sheets-Sheet l Inventor Patented Nov. 13, 1934 UNlTED STATES PATENT OFFICE 4 Claims.

This invention relates to scaffold brackets and has as its object the provision of a bracket which may be readily mounted on a ladder, and which can be used regardless of the length of the ladder,

and further which will permit the use of a relatively long ladder, the brackets being efiective for holding the ladder away from the gutter of a roof or the like regardless of the length of the ladder.

Further in accordance with the present invention a scaffold bracket for attachment to a ladder is provided which can be applied to the side of the ladder at any desired point in the length of the ladder so as to engage at all times the side of the house instead of the roof of the house for supporting the ladder away from the gutter.

The invention will be understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figure 1 is a side elevational view illustrating the application of the bracket.

Figure 2 is a fragmentary enlarged sectional view showing the manner of mounting the bracket on the side of a ladder.

Figure 3 is a top plan view of a clamp forming part of the invention.

Figure 4 is a sectional view taken substantially on the line 44 of Figure 2.

Figure 5 is a sectional view taken substantially on the line 5-5 of Figure 1.

Figure 6 is a side elevational View of a second clamp.

Figure '7 is a top plan view of the second clamp.

Figure 8 is a plan View of an arm forming part of the bracket, certain parts of the arm being broken away and shown in section, and

Figure 9 is a perspective view of a supporting bar forming part of the invention.

Referring to the drawings by reference numerals it will be seen that the scaffold bracket comprises a clamp 10, made of metal or other suitable material. The clamp 10 is of box like construction having fixed sides 11, 12 and 13 and a fourth side 14 hinged to the side 12 as at 15.

The sides 13, 14 at their free edges are provided with suitable sleeves 16 which aline one with the other when the clamp side 14 is in the position shown in Figure 3. A latch rod 17 is engageable with the sleeves 16 to secure the clamp 10 on the side 18 of a conventional ladder designated generally by the numeral 19.

When the side 18 of a ladder is of such dimension that the clamp 10 does not fit snugly thereabout binding screws 20 provided on the sides 12 and 14 of the clamp may be threaded into engagement with the ladder side 18 as'clearly suggested in Figure 2.

On the side 11' of the clamp there is provided an integral guide sleeve 21 and slidably engaged in the sleeve 21 is the rectangular or non-circular end portion 22 of an angular arm 23 that is provided for supporting the ladder 19' away from the wall of the building. The arm 23 may be secured at the desired adjustment by tightening the set screw 24 into engagement with one of the recesses 25 provided on one side of the arm end 22 as will be clear from a study of Figures 4 and 8.

There is also provided a scaffold-board supporting arm 26 that in the present instance is T-shaped in cross section and is pivoted at one end as at 27 between a pair of spaced cars 28 projecting from side 13 of bracket 10. At its free end the arm 26 is provided with an upturned flange or stop portion 29 to engage one edge of the scaffold-board for retaining the board on the arm. 26. At said end the arm 26 is also pivotally connected as at 30 witha substantially longitudinally curved or arcuate brace and adjustment bar 31.

There is also provided a second bracket 32 and the same is of elongated U-shaped form and is so adapted to straddle the side 18 of the ladder 19 in proximity to a selected one of the rounds of the ladder. On one side thereof at its lower edge the clamp 32 is provided with a semi-cylindrical extension 33 to rest on a rung 18a. of the ladder in the manner clearly shown in Figure 5. On a relatively opposite side thereof the bracket 32 is provided with an integral sleeve 34 through which is slidable the free end of the brace bar 31; Extending through the sleeve 34 is a binding screw 35 that is screw threadedly engaged with a boss 36 provided on the outer side of the sleeve 34. The screw 35 when tightened against the side 18 of the ladder will serve to secure the bracket 32 in place. The brace arm 31 on its lower edge is provided with a series of notches 3'7, a selected one of which may be readily engaged with the screw 35 as shown in Figure 5 for bracing and supporting the arm 26 at the desired adjustment.

From the above detailed description it willbe apparent that in actual practice two of the scaffold brackets are used with a ladder, and when the arms 23 are properly adjusted the ends of the arms may be engaged with the side wall of the house as shown in Figure 1 for supporting the 5 ladder 19 at the desired angular adjustment and away from the gutter 38. Thus the brackets will dispense with the need of resting the ladder against the gutter 38, which is objectionable since the weight of the ladder and the person thereon often causes damage to the gutter 38 necessitating extensive repairs.

Of course when it is desired to support a scaffold board two ladders 19 will be employed and the supporting arms 26 of the brackets will readily accommodate therebetween a scaffold board thus providing a strong and efficient scaffold. In this connection it will be seen that regardless of the angle of inclination ofthe ladders 19 the supporting arms 26 may be secured in horizontal position by properly adjusting the bracerods 31.

Having thus described my invention, claim as new is:

1. A scaffold bracket for attachment to the side of a ladder comprising a clamp adapted to be secured to one side of the ladder, a second clamp adapted to be secured to the same side of the ladder below the first named clamp, each of said clamps having a sleeve at one side thereof, a supporting arm having an end slidably engaged with the sleeve of the first clamp, interengaging means on said supporting arm and the sleeve for securing the supporting arm at the desired adjustment, a scaffold board supporting arm pivoted atone end to one side of the first named clamp, an arcuate what brace bar for said supporting arm pivoted at one end to the free end of the supporting arm, said brace bar having a free end extending through the sleeve of the second named clamp, and interengaging means on said brace bar and the second named clamp for securing the supporting arm' at the desired adjustment.

2. In a bracket of the class described, a clamp having three relatively fixed angularly related sides, said clamp being adapted toembrace a side of a ladder, a fourth side hinged to one of the first named sides, interengaging means on the free edge of said fourth side and the free edge of a second one of the first named sides for latching the aforementioned sides together to secure the bracket on the side of the ladder, a sleeve on one of the sides of said clamp, and a supporting arm having an end slidably engaged with said sleeve and provided at said end with a series of recesses, and a securing screw threadedly engaged with said sleeve and having an end adapted to engage a selected one of said recesses for securing the arm at the desired adjustment.

3. A bracket for use with a ladder comprising a pair of clamps each having a lateral guide sleeve together with clamping screws, the latter being adapted for engaging a part of the ladder to secure the clamps in position, a supporting arm having an end portion slidably engaged with the sleeve of one of the clamps, a binding screw adjustable transversely through said sleeve to engage the end of the supporting arm for securing the latter at the desired adjustment; a scaffold board supporting arm pivoted at one end to the first named clamp, an arcuate brace arm pivoted at one end to the free end of the scafiold board supporting arm, said brace arm having a notched free end operating through the sleeve of the other of the clamps, and the clamping screw of said other clamp having a part thereof extending through the sleeve thereof for engagement with a selected notch in the said free end of the brace arm.

i. A scaffold bracket for use with a ladder comprising a scaffold board supporting arm, a clamp pivoted to one end of the arm, said clamp being adapted to be secured to the side rail of a ladder, a second clamp adapted to be secured to the side rail of a ladder, an arcuate brace arm pivoted at one end to the free end of the scaffold board supporting arm, and said second clamp being provided with a sleeve slidably accommodating the free end of the brace arm, and a binding screw operating through the sleeve to engage the rail of the ladder for securing the second clamp in position, and for also engaging the free end of'the brace arm for securing the latter at the desired adjustment.

LOUIS CHARLES EBERLE. 

